Thanks for adding your input to this as well. I know its supposed to be a community support only forum but I see a lot of topics closed as “solved” just due to inactivity because some of these questions are best answered by the folks who compiled the stack.

I tried setting this up myself following vanilla tutorials I found online such as digital ocean, etc. but somehow caused a loop and found that while emails from my email client were going through, emails from all of my websites via wp_mail were not. One site in particular was being used for my invoicing system so this directly affected me getting paid for a few weeks =(

Glad I figured it out and reversed what I did until I have time to figure it out but it would be nice to have some clarity from the pros if they are so inclined.

For the record, when I looked at the tutorials section, it at first appears to be alphabetically organized and I didn’t see anything regarding mail. If I had just scrolled past the first set of M’s I would have seen it forehead slap